I see what you’re saying, it’s just that I think it’s most likely that the people Googling suicide-related keywords are probably doing so because of suicidal ideation, so I think the logic behind the study holds. They could be looking up those topics for research or to help a friend or something, but in general, thinking excessively about death and/or suicide is associated with depression, so it seems likely that suicidal people would be doing the majority of that Googling. But that being said, there are definitely more precise means of researching this subject and I think it’s important to constantly be looking for better ways of approaching these questions